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alina1380 [7]
4 years ago
9

A classroom contains an equal number of boys and girls. If 5 girls leave, twice as many boys and girls remain. What was the orig

inal number of students present?
Mathematics
1 answer:
lorasvet [3.4K]4 years ago
5 0
The answer is 10 because 5 x 2 is 10
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Factorise 25x+15 mate
Ivanshal [37]

Answer:

5(5x+3)

Step-by-step explanation:

25x=5*5x

15=5*3

5*5x+5*3

Factor out the Common 5

5(5x+3)

6 0
3 years ago
Anita works for a dog-walking service. She earns a one-time fee of $10 plus an additional $2 for each dog she walks. If Anita wa
ahrayia [7]
40=10+2x where x is the number of dogs.
30=2x
x=15
Therefore she must walk 15 dogs

Hope this helps :)

6 0
3 years ago
Write the coordinate of the intercept
Basile [38]

Answer:

m = 2/3

y-intercept: 2

Explanation:

First convert this equation into standard form by distributing the 6y and -4x from the coefficient of 2, and then putting the variables in order.

This equation should be in the form: Ax + By = C (Standard form)

y = -Ax/B + C/B : y = mx + b (Slope intercept form)

2(6y - 4x) = 24 → 12y - 8x = 24

→ -8x + 12y = 24 → -8x = -12y + 24 → 8x = 12y - 24 → <em>8x - 12y = -24</em>

<u>8</u>x <u>- 12</u>y = <u>-24</u>

| | |

A B C

Once you have standard form, you are ready to convert this into slope intercept by isolating the y completely.

8x - 12y = -24

-8x -8x

(First through the subtraction property of equality, remove 8x from both sides so that -12y is by itself on the left)

-12y = -8x - 24

×-1 ×-1 ×-1

(Through the identity property of negative 1, remove the negative sign from all of the numbers because a negative times a negative is a positive)

12y = 8x + 24

(Lastly, through the division property of equality, divide all sides by 12 because it is the coefficient of y, which will solve for the variable)

8 0
3 years ago
2. A park ranger is standing on the top of a 125m hill looking down at a tree. She measuring the
Orlov [11]

Answer:

Step-by-step explanation:

hope this helps

4 0
3 years ago
(01.01 MC)Why is 3 + (−5) equal to −2?
maxonik [38]

Because three minus five is -2 ..

3 0
3 years ago
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